Tetraethylammonium fluoride trihydrate is widely used in organic synthesis as a fluoride ion source, particularly in nucleophilic fluorination reactions. It is effective in introducing fluorine atoms into organic molecules, making it valuable in the production of pharmaceuticals and agrochemicals. The compound is also utilized in the preparation of fluorinated intermediates and as a catalyst in certain organic transformations. Additionally, it finds application in electrochemical studies and as a reagent in the synthesis of fluoropolymers. Its ability to act as a phase-transfer catalyst further enhances its utility in various chemical processes.